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首页> 外文会议>International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES) >Application of Deformation to Improve Hot Ductility in the Peritectic Steel
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Application of Deformation to Improve Hot Ductility in the Peritectic Steel

机译：变形在改善包晶钢热延展性中的应用

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摘要

The recent progress of steel manufacturing technology, such as thin slab casting and hot charging has given rise to necessity of refinement of austenite grain size in as-cast steels. One of the benefits of such grain refinement could be the alleviation of hot cracking during steel production. In this work, improvement of hot ductility in the peritectic steel by means of deformation after solidification is studied. Tensile specimens were melted and solidified in situ and the hot ductility was examined at temperatures ranging from 700 to 1100℃, under two conditions: with and without a pre-deformation applied between 1400-1300℃ in during cooling. It was noticed that such pre-deformation improves the hot ductility significantly. This improvement could be attributed to austenite dynamic recrystallization and grain refinement taking place during the pre-deformation.
机译：诸如薄板坯连铸和热装钢之类的钢铁制造技术的最新进展已导致有必要精炼铸钢中的奥氏体晶粒尺寸。这种晶粒细化的好处之一是可以减轻钢铁生产过程中的热裂纹。在这项工作中，研究了通过凝固后的变形来改善包晶钢的热延性。将拉伸试样原位熔化并固化，并在以下两个条件下在700至1100℃的温度下检查热延展性：在冷却过程中，在1400-1300℃之间施加和不施加预变形。注意到这样的预变形显着改善了热延展性。这种改善可以归因于在预变形过程中发生的奥氏体动态再结晶和晶粒细化。

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